Question

At what time between 10 and 11 O'clock will the hand of
clock be at right angle?​

Answer 1

Step-by-step explanation:

For this sake we have to use the following formula

$|30h - (11 \div 2)m| = theta$

where h is hours and m is minutes, theta is angle between them

|30×10 - (11/2) m| = 90

300 - 90 = (11/2)m

210 ×2/11 =m

m = 38× 1/11 ( mixed fraction )

so time is 10hrs 38× 1/11

hope it helps you